spaghtti sauce

[Sung.DeAngeo]

When and where was spaghtti sauce invented?

[heathfield]

One of the main ingredients in spaghetti sauce is tomatoes. These were unknown in Europe until they were brought over from Central America by Cortez, probably around 1520 - 1530. So it couldn't have been before then.
But the Aztecs had been cultivating tomatoes from around 700 AD, and would undoubtedly have enjoyed them in a good chilli. And spaghetti sauce is much the same, but without the chilli peppers. So you could say it was the Aztecs!
(Tomatoes were once thought of as being poisonous! Read about it here)

[aristotle]

There are hundreds of different sauces to have with spaghetti and many of them don't include tomatoes. A more sensible question would be When and where was spaghetti invented? as nobody could seriously have eaten it without a sauce. I for one haven't the foggiest.

[Octavius]

Bolognia?

http://en.wikipedia.org/wiki/Bolognese_sauce

[heathfield]

Spaghetti was invented in China, at a time when we were running around in animal skins, only it was called 'noodles'. Marco Polo is reputed to have brought some back with him.